Well, what I wanted was a new cap on that button (looks like a 10 second thing) what I got (so far) is "learning experience". Here is the take so far.
All the tools I think I require (and lots more actually)
1. Remove the dashboard bezel, pretty easy once you know what it feels like. As described start in the upper right corner, wrap fingers behind and tug and you can feel the pressure fitting points release. Once you know where they are (see next image) it's easy but also be careful when you take it out not to scratch anything, (metal clips near a LARGE clear-plastic instrument cover) it only comes out one way, top first, and requires a slight bending of the part.
This image shows the bezel out of the car. The 7 tabs are located (1) middle right edge, (2) on each side about 1 inch from the steering wheel opening, (2) one on each outside of HVAC vent, (2) at bottom on right side. Looks like I will be replaceing the dead foam padding around the vents soon too.
2. OK, so now we can see the 3 Phillips head screws and two alignment posts that secure the radio. I knew what do do from here.
3. This is where it got tricky. (see above how
EVERYTHING becomes a project) Once I pulled it out I discovered a few things.
Not easy to work on or remove the unit.
a. There isn't a lot of leeway in the cables so it's not really possible (as far as I could see) to pull the radio out far enough to clearly see what's going on behind it or to get a secure grip on the cables to yank them. Because of the lack of extra cable the radio fit is extra snug. I was handling it with extra care both in removal and replacement. If there was more cable I'd have been more comfortable trying to remove the faceplate without removing the radio from the connections, but this makes it tight quarters. This image shows the radio extended near the limit of the factory wiring. Thanks for the leeway GM! I'm sure another 10 inches of cable would have upset the shareholders
tremendously.
b. My thought here is that it's probably safe to give the cables a good yank so I can remove the whole unit from the car, but out of concern for the cabling and stereo etc. I decided not to push my luck here.
I felt like I should ask first of someone whose been here before.
Is it safe to just yank on these things? Also I intend to add an iPod/MP3 player jack. If I knew which one of these was the power line in that would be good too.
Radio Tabs aren't releasing the fascia as easily as suspected.
c. Those tabs mentioned earlier (if these are them) don't come off easily, at least not from this awkward still in the vehicle position.
I tried to manually unclip them and can't seem to get decent leverage from getting them all off at the same time. (and the disadvantages of not being an octopod once again become obvious - wouldn't it be awesome to have octpus arms but still have opposing digits? Boy would I productive!). There appear to be 2 clips on each side (8 total) and each looks slightly different in size and function.
When I tried to remove the facia from one side it felt like it was still trying to stay on in the middle and I am concerned that yanking that off would cause damage to the radio or faceplate. It felt like even though the one corner was off and lifting, there was soemthing behind the faceplate near the tuning buttons that wasn't letting the faceplate even slide half off.
Also, because this has a Delco-Lock I am aware that certain actions on the stereo could disable it so I am even a bit concerned about removing it from power and then needing to learn how to reset it. (another
project right?)
So I returned it to the previous state.
So at this time knowing that I have determined how to get the radio out of the dashboard in well under 5 minutes I decided I should come back here and see what the experts advise as I can get back to where I was, easily and quickly enough next time around.
So here's the current dilemma. Do I just grab those two wire sets (one has a skinny red wire leading into a connector, this one has an obvious locking clip and removes easily) (does anyone KNOW if this is the power line?) The other one must be the speaker wires and steering wheel control connections because it has about 10+ wires in a bundle. I put medium pressure on it to try and remove it from the radios back but it wasn't budging, I saw no locking clip, Am I not seeing a locking clip or do I just need to apply more pressure to unseat the connector?) I can also describe this better, the clip as it seems to be half white and half black, might be two clips that interlock? One for speaker cables the other for the wheel controls.
As far as the side clip/tabs that hold the front of the radio on. Is there something else that could be holding the faceplate on in the middle or has anyone else removed this and determined it also is just a matter of confidently knowing it is engineered to bend and won't break?
d. Not to mention that the radio dial lamp has already shown some flickering behavior (a loose connection somewhere) so I am trying not to push my luck there either. Sadly I've also seen a couple of incidents of the LCD's misfiring and station ID"s or time doesn't display correctly but that has so far always corrected on the next "auto-reboot".
So I replaced the radio and bezel and it's all back like it was before. Seeking advice before I risk ripping off the facia and ruining it or messing up the wiring by trying to yank something that has a hidden clip or technique. ~Thanks.
Check it out!
LUCAS 
Member # 534.
I once pulled apart my digidash to fix a faulty ambient temperature reading. In the end it turned out to be a useful venture as I found several cold solder joints. But I'm sure some would have considered me neurotic. I also dismantled my multifunction switch from my Grand Marquis to clean all the contacts. 
